Machine fob treating thin rubber



- l 17, 1945- G. A. FINGADO EI'AL 4 Re. 22,631

MACHINE FOR TREATING THIN RUBBER ARTICLES Original Filed July 1, 1939 6 Sheets-Sheet 1 INVENTORS 605 741 ,4 F/A/GADO ##MS 1 vow/a ATTORNEY.

April 17, 19 e. A..FINGADO ETAL MACHINE FOR TREATING THIN RUBBER ARTICLES Original Filed July 1, 1939 6 Sheets-Sheet 2 April 17, 1945.

G. A. FINGADQ ETAL MACHINE FOR TREATING THIN RUBBER ARTICLES Original Filed July 1, 1939 6 Sheets-Sheet 3 April 17, 1945.

Original Filed July 1, 1939 G. A. FINGADO ET AL MACHINE FOR TREATING THIN RUBBER ARTICLES 6 Sheets-Sheet 4 ATTORNEY G. A. FINGADO ETAL Re. 22,631

April 17, 1945.

' MACHINE FOR TREATING THIN RUBBER ARTICLES Original Filed July 1, 1939 5 Shets-Sheet s INVENTORS 1 606741 4 fill 677170 ATTORNEY.

April G. A.FINGADO ETAL Re. 22,631

MACHINE FOR TREATING THIN RUBBER ARTICLES Original Filed July 1, 1939 6 Sheets-Sheet 6 m 5% mmw WWW m N 2 4i l Q g A 3% 1| to be rotated a plurality of times half rotation at each operation; means for preventing an operation of .the spinner in cas'e'the ReissuedApr. 17, 1945' UNITED STATES PATENT. OFFICE moun ron'ram'rmo m RUBBER An'ncms Gustav A. Fingado,

Little Falls, and Hans Ludwig, Hohokus, N..J'., assignors to Julius Schmid,

Inc., New York. N. Y.

Original No. 2,288,444, dated 1, 1939'. Application for reis- No. 282,449, July June so, 1942, Serial sue May 18, 1944, Serial No. 536,149

9 Claims.

This invention relates to a machine for the treatment of thin tubular rubber articles and the like, preferably formed. from liquid latex but adapted for other uses as well, and is particularly directed to an apparatus for producing such articles whereby the same will be of uniform thickness and smooth exterior surface. I

In one well known method of manufacture of thin walled rubber articles, a dipping form in inverted position is lowered into liquid latex or the like and is then raised and moved into a, drying or curing region. Theliquid latex .in this fluid state runs to the'lower end of the form and accumulates there in excess amounts and if not removed before the drying or curing operation, will cause an uneven and an objectionable-tip 'or globule of thick rubber on the article, which from a commercial point of view would lower the quality andnsalability of the article.

The main object of this invention is the-provision of mechanism for mechanically removing excess liquid latex accumulated on the ends of th dipping forms duringthe manufacture of thin rubber articles or the like.

More particularly; a more specific object of thi invention is the. provision of mechanism for removing such excess material by means of cen trifugal action."

Another object consists in the provision of a.

spinner rotatable on a horizontalaxisand provided with two oppositely disposed form board guides;' means for operating the spinneninter mittently and arresting the same .with .the guides .in a vertical plane so as to present one guide in the loading position and the discharging position;

the opposite guide in means for automatically pushing a form board into the lower'guide I and automatically pushing a form board out of th upper guide; means for causing th spinner d an extra form boards are not in fully loaded or fully discharged position; a weightfor counterb'alancing a form board in the spinner and means for automatically positioningthe weight to counterbalance a form board in either of the guides when that guide is in the loading position.

Other objects of the invention will appear from the following description taken in connection with the drawings. in which:

Fig. 1 is a front elevational ner mechanism; I

Fig. 2 is a top plan view of themechanism dis closed in Fig. 1;

view of the spin- Fig. 3 is anend elevation of the mechanism as viewed in Fig. 1;

Figure 4 is a horizontalsection on the line.4-'-l.

ofFig.3;-

Fig. -5 is a fragmentary view of the right hand upper portion. of Fig. 1. onv an enlarged scale;

Fig. 6 is a vertical section on line 6-8 of Fig. 5; Fig. 6a is a horizontal section on the line fizz-6c of Fig. 6; x

Fig. 7 is a side e mechanism as viewed from the left in Fig. 1;

Fig. 8 is a top plan view of the mechanism shown in Fig. 7;.

Fig. 9 isa detailed Fig. 8 showing the pawl of engagement;

Figs. l0 and 1 illustrate the operation of the means for returning the counterlzlalance weight to starting position; 2 Fig. 12 is a side view of out mechanism;

spinner clutch lock- Fig. 13 1s a view taken on line IS--I! of Fig. 5; and y Fig. 14 is a vertical section on the line ll-fit j Fig. 9.

The drawings disclose a preferred form of a spinner apparatus constructed in accordance with the principles of our invention. This apparatus is preferably used in a machine which com- 80 prises means for dipping. forms and presenting them successively in loading to the spinner. The mechanism disclosed includes a spinner rotatable on a horizontal axis and provided with diametrically oppositely dis-y 35 posed guides in vertical alignment when the spinner is at rest, togetherwith mechanism for rotating the spinner at a sufficient rate of 'speed to accomplish the purpose and means for stopping the spinner after two and one half rota- }0 tions, with the loaded guide in the dischargin position and the unloadedguide in the loading position. The spinneris operated intermittently and when the spinner is at rest a transfer mechanism is operated'to push a to discharge a form b'oard out of. the upper. guide which is in the discharging position. The machine also'in'cludes sensing means which isoperated after the transfer has been made and 50 which comprises fingers which move across the paths of the form boards adjacent the ends of the spinner in the loading and. discharging regions, and if either of the fingers senses ai'orm operates, the

b'oard in the regionin which it so clutch which is used to control an intermittent evation of a. counterbalancing view of the clutch shown in for holding the clutch out position with respect form board into, the '45 lower guide which is'in the loading position and.

which must bereleased manually. -Mechanism such as'a conventional conveyor, for example, is

also provided for removingthe discharged form board and transferring it into a (not shown).

drying chamber Spinner The machine includes a pair of standards 39!) and 33L Figs. 1 to 6, secured to the sub-frame by bolts 332 and provided, respectively, at their upper ends with forwardly extending portions 335 and 395', respectively, provided with bear ings 333 and 394 in which is journaled a shaft .333 provided with extensions 331 and 388 on the outside of the standards. Mountedon theshaft 333 between the portions 385 and 385' is a spinner 390 which comprises a pair of end members consisting of hubs 39! and 392 fixed to. the shaft by set screws or tapered pins 393 and provided. re-

spectively; with pairs of radially disposed arms 394 and-396, the arms of eachpair being 180 apart and terminating in flanged portions 391 and 399 to which are secured by bolts 399, longitudinally disposed form board guides 490 and 4M which lie in the same vertical plane and are aligned with the pushers of the transfer machine when the spinner is \at rest. 7

- The guides 4lllt and 4M are constructed and suitably proportioned to freely receive the form boards B carrying dipping for'msA coated with liquid latex C, and to retain the boards against radial displacement the guides are provided with retaining plates 402 secured to the walls of the guides in positions to slightly overlie the longi tudinal edges of the form boards 13. The form boards B are each yieidably held against longitudinal displacement by devices 495, each in- The rolls 493 move in slots 4 in the webs of the guides and are pressed against the form boards B by tension springs 4 adjustable by nuts cooperating with screws 4| 3 slidable in brackets 4| 4 secured to the webs of the guides.

The rocking movement of the arm 40! upon which .the roll is mounted is limited by-an adjustable stop pin 4| 6 threaded into a lug 4l'I inte-' g'ral with or otherwise secured to the bracket 408. The receiving end of the spinner is provided with a guard-member in the formof a disc 420,, Figs. 1, 2 and 3, which is secured to the shaft 333 and isprovidedwith notches receiving the ends of the form board guides 4M, 4M.

A motion checking device which, as illustrated,

' may take the form of a conventional mechanical brake 42l, Figs. 1 and 2, is provided. The drum of the brake is keyedto the extension 331 of the shaft 339 while the friction elements or brake shoes are pivotally mounted at 426' on the standam 330, the free ends ofJthe brake shoes'being adjpstably held together by an adjusting belt which provides suitable-frictional contact upon the surface of the drum'to aid in retarding the motion of the spinner at the end of each cycle board B into the lower guide into the position shown in this figure and ,to move a form board B out of the upper guide into the position shown in this figure. is provided to prevent an operation of the spinner if the form board in the lower guide projects.

out of the entrance end of this guide or if the ,form board discharged from the upper guide has not been pushed far enough from the exit end of the upper guide to provide safe clearance for an operation of the spinner- For purposes of de-. scription it may be assumed that the transfer mechanism and spinner control mechanisms are operated during the first half of the cycle oi op- Intermittent drive mechanism for. the spinner After the transfer pusher bars-359 and 365 have been withdrawn into-the position shown in Fig. 1, the spinner 390 is made to rotate two and one-half times through a spur gear 430, Figs. 2, 3 and 6, secured to the extension 388 of the shaft 386, an intermediate gear; 43! rotatable upon a stub shaft 429 supported in .the forward- 1y extending portion 395 of thestandard39l and the large driving gear 432. The latter is keyed to the end of a short shaft 433 joumaled in a' bearing 434 on the standard 38!. The other end of the shaft 433 hassecured thereon one member 435, Fig. 5, of a clutch indicated generally by the numeral 436, which has square jaws 431 adapted to freely interengage with mating jaws of clutch member .438 mounted and splined for axial movement on'a shaft 439 journaled in an elongated bearing 4 in a standard 442.

The opposite end of the shaft 439 has fixed thereon'a pinion 443, Figs. 1, 2 and 3, coacting with a' rack bar'444 provided with a rack portion 444' held in mesh with the pinion by a guide member 446 provided with suitable journaled lu s 441 bearing upon and retained on the shaft 439 by a collar 443'. The rack bar 444 is reciprocated through the medium of a crank pin 449, Fig.1, secured to a pair of crank discs 45l Figs. 1, 2, 3 and 4, one of which is keyed to a driving shaft 452 that is synchronized with the trans- Mechanism to be described later fer mechanism while the other crank disc has keyed thereon an extension shaft 4', Figs. 1,

4 and 6 in coaxial relation with the shaft 452.

The shaft 452 is driven through a gear reduction device 453, Figs. 1 and 2, supported on a standard 455 and which is driven through miter gears 224' associated with the power shaft 224 journaled in brackets 454,456 and 460 and which is driven through a sprocket 456 and chain 456" which may be driven from a countershaft of a machine of the type herein disclosed incase sevwhich comprises pusher bars 359 and 393. Fig. 1,

i operated automatically in timed relation to the intermittently operated spinner to move a i'ornr eraimachines are arranged in tandem.

Intermittentdriving of the spinner-399 is obtained through a clutch controlling cam 45V,

Figs 1, 5 and 6, secured tothe shaft-411 and provided with a rise and a 180 dwell. The

peripheral cam surface of the cam cooperates with a cam roll -45l" urged into contactwith the cam by a spring 5l2"whic'h is the clutch encenter, the arms "I & downwardly by virtue of disc "I provided in notches I and 3 spaced 180 apart and which roll I'll supported I "I. The cam roll with the cam"! by will be noted that .a raised surface 41! carried by a yoke member Ill. The lower end of the. yoke, is slotted as at 1' to override the'shaft "I, while its upper end is held in vertical alignment with the shaft by a vertical slot 1" that overrides a guide post lll provided with retaining collars MI. The guidepost is supported inthe standard Ill. 7 I

A pair of curved links 4", Figs. 1, 5 and 6, pivotally connected to the yoke 8' as at 50' extend vertically therefrom and are connected by a pin III to the arm I" of a rock lever it! supported on a pin it! in a bracket till mounted on the standard "I; The other arm "4 of the rock lever is provided with a. yoke tilt-carrying block members 5" into which project pins ill! on a pin Fig. 5,

i on a collar 50 rotatably retained in the clutch H secured on the slidable clutch member "I to move the same to the right as viewed in Fig. 5, against the compression of the coiledspring H2 which abuts a collar ill secured on the shaft 41!, to disengage .the teeth of the clutch m v bers when the links "I are pulled downward by the cam til.- cam 45! is so timed relative to the crank pin I that when the rack bar 4, Fig. l, is starting its upward movement from the bottom dead will have been moved member A" by a collar acting upon the roll "I", causing the clutch to be disengaged. Simultaneously, and as will be described later, the spinner will be locked and prevented from further rotation through the engagement of a locking pawl 46 5, Fig. 6, with locking disc I on the extension 388 of the shaft as. \The transfer mechanism will then be set in operation to operate the pusher bars to push a form board into to push aform board out of At the instant that the crank pin- '9 has reached top dead center and the rack bar I has reached its upp rmost position and will be moved downwardly upon further movement of the crank pin, the locking pawl 486 will be disengaged from the locking disc I, as will be described more in detail later, and simultaneously the clutch will re-engage for an ofone-half rotation of the shaft lfl which rothe upper guide.

tatesthe spinner and completes a cycle of operation.

I Spinnerlpositive positimling means As best seen in Fig. 6', the eiftension ill of the spinner shaft as has keyed thereon adjacent to the driven end, 'a positive positioning or locking its periphery with looking are adapted to receive a lip portion "4 onthe free end of arock lever B pivoted on a pin 1 in the forwardly extending portion. 385 of the standard "I. Pivoted to the of the lever 4" by of a cam rod 9 which is slotted at its lower end to override the cam shaft 41! (see also Fig.

5) which is rotated by the discs I, Figs. 1' and 4. a cam 41!, Figs. 4, 5 and li provided with a pcripheral cam surface with aforementioned crank on a pin!" on thecam rod 413 is urged into contact means of a tension spring lit, Fig. i; secured to an arm of the rock lever an and to apin the cam "I is provided with of about 17-6 and the earn the rise of the cam ltl' the lower guide and I". This timing means includes sign of the cam is located in this recessed por- Q tions pertaining The - "I while its upper end interval I opposite end a pin I is the upper end Keyed to this shaft is which coacts a cam.

m in the standard m. It

cars sis and m of tion and bolts I coacting with the slot 482 clamp the inset member in adjusted position within the recess. The inset member I is shorter than the recess so that adjustment may be made in either arcuate direction, as re-,

quired.

. The spinner device "I hasjust been released and two and one-half times when it is brought to rest and locked in position by the lock lever "5.

It is to be understood that the number of m: tations of the spinner and the rate of speed thereof required are contingent upon the condito the solution of latex C upon the forms A and that the ratio of gearing may be changed as desired.

It will also be noted that with each rotation of the cam 412 the locking'lever will be actuated to disengage from one or the other of the notches 462 and $83 and engage with the other to position'and lock the spinner relative to the transfer mechanism for loading and discharging the form boards B.

in the position shown is about to be rotated Automatic safety clutch thrown-out An automatic safety clutch control mechanism is provided which as best seen in Figs. 1, 5, 6, 12 and 13, includes a cam 490 mounted onthe shaft "I and which actuates a camroll 482 on a cam bar 493 guided for vertical reciprocal movement through the medium of a slot (not shown) adiacent to its lower end which overrides the shaft is slidable within a guide secured'to the frame 422 and has secured thereon a latch block "1 adapted to interlatch with a latch member "I on the lower free end of a pendant rod 499 pivotally connected by the pin 505 with the clutch rock lever I,

The cam roll 492 is held in engagement, with the cam 490 by means of the tension spring 5 secured at one end by stud iii to a guide block It, later referred to, and at its other end to the cam bar "I while the rod 49! is urged into engaging position with the cam rod 493 by a tension spring I" secured to the frame 422, and accordingly when the latch member 498 on the pendant rod us is operatively latched with the latch block "1 [01' the cam rod 3, it will be moved downwardly to move the clutch member I through the action ofcam 490 upon cam roll "I farther to the right of its disengaged position effected by-the cam 4H and before it is released by the cam ilk The upper corner of the block. 451. is beveled at 542 to cooperate with a beveled surface "I on the pendant rod to cam the latter to the left out of the path of the cam rod "3..

' While the clutch is thus disengaged the end til, Figs. 12 and 13, of the rock lever SM vis acted upon by a; locking device generally designated by the numeral iii to prevent its upward return movement until the locking device has been released by the hand of 1 device includes a dog 52! provided with an offset portion '21 fixed on a pintle til iournale'din the a supporting member Ill se-' cured to the frame 422. The dog 82: includes a body which is A the operator. The locking depending portion 529 which carries a stop member 53| secured thereon so as to form a shoulder 532 at its lower end, relative to the extreme lower end 533 ofthe depending portion B9. 7

The pintle 524 has arr-extension 534 encircled by a coiled spring 536 one end of which is secured to a collar I31 fixed to the lower end of the pintle, while its other end is anchored to the adjacent car 521 of the adjacent supporting member 528. The locking device is so positioned relative to the end lfl of the arm 500 that the stop 53! which forms the shoulder 5321s yieldably urged against the end iii of the arm 500 by the spring 536 and pintle 524, when the arm is moved downwardly by the clutch cam llil', but when the arm has been pulled farther downwardly by the cam 490 shaft "L- The surface of the cam is such as to withdraw the fingers and to hold them withdrawn during the transfer operation and to release them after the transfer operation has been completed, 50 as to permit the fingers tobe moved through the spaces traversed by the form boards. This movement is effected by a heavy tension the dog is permitted to be further rotated to'sn'ap I the shoulder 532 over the top of the end SI! of the arm 500 to an extent which is limited-Hy,

engagement of the depending portion 533 with the side of the arm I", and accordingly, the

arm 500 is held in this downward position and will be prevented from returning to clutch engaging position until the safety locking device 52l has been manually released.

A guide member 543 secured to the frame 422- serves to keep the pendant rod 499 -in vertical alignmentwith'the rod 483 in one plane at all times. j i

The automatic safety clutch throw-out mechanism as described would, without any controls about to be described; operate during each oper ation of the machine and would prevent an operation of the spinner.

Control for the automatic safety clutch thiroui-outv This control consists of sensing fingers one of which operates through the space in front of the entrance end of the lower guide on the spinner and the other of which operates through the space at the exit end of the upper guide of the spinner, so as to determine whether a form board has been pushed into proper position in the lower guide or has been pushed far enough out of the upper guide to clear the spinner for safe operaion.

These fingers are timed to be actuated about 80 in advance of the unlocking of the spinner and the engagement of the clutch.

As best seen in Figs.'2', 5 and 6, one of the 385 and actuated'througli a pin connection 593 with a rod 594 pivotaliy connected at 586 to the end of an am 591 secured to a common rock shaft 598' Journaled'in bearings 599, 80!, 602, Figs. 4

and 5 carried by standards 803, 884, 806, respectively mounted upon and secured to the sub-base.

spring 526 secured to thecam bar 62f as at 621 and to a pin 628 in the supporting member 629 secured to the miachine standard 422. This movement is timed to take place just before the cam 4,90 becomes effective. 7

To the upper end of the extension BIB, Fig. 6,

of thearm 6" is pivotaly connected by a pin 63! one end of a cam bar 532, see also Fig. 5, the opposite endf of which is slidably supported in the bracket 633 secured to the frame 422. The bar- 532 is slidably positioned adjacent to one edge of the pendant rod 499 and isprovided with a cam block 634, Fig. 6a, which when the bar is moved to the right engages the rod 499 to disengage the Earn latches 491 and 438, so as to disable the automatic safety clutch throw-out mechanism and permit the main clutch operating mechanism to function to engage the clutch and permit operation of the spinner, in case the sensing fingers are free to move through the spaces adjacent the guides, as before .explained.- If

either of the form boards is not in a proper position at the end of the transfer operation, then the movement of the fingers will be obstructed and the cam bars 632 will not move to the right,

with the result that the automatic safety clutch throw-out mechanism will be operative to move the clutch farther to the right, in which position it will be locked until it is manually released.

Counterbal ancing mechanism 4 structive forces to be set up in the whole unit the spinning cycle.

unless the form board is counterbalanced during At the same time, when no form board is in the spinner the counterbalancing mechanism must be kept out of action to prevent destructive strains in the mechanism. The device is so constructed that if aform board is pushed into the spinner to be spun around, the counterbalance weight is connected to the spinner in counterbalancing relation to the form board and therefore counteracts the centrifugal forces set up by the form board, and when no form board enters the spinner the counterbalance weight remains disconnected during the spinning cycle. The counterbalancing mechanism is dis- ,1 closed in Figs. 7 to 10 and 14. The parts are shown in the position at the end of a spinning e other finger 801, Fig. 6 is the free end of a rock lever 50B, pivoted in a bracket 9 by means. of a pin 6H and actuated through a pin connec-v tion in with a rod 613 pivotallykconnected at ill to an arm GIG secured to the rock shaft 598 intermediate of its ends. p

The rock shaft 598, Figs. 3, 4 and 6, is yieldably oscillated through the medilnn'of avertically disposed arm 6" secured thereto and which has an with the cam surface 623 or-acamlfl on the earn cycle, i. .e., at the beginning of a cycle of operation of, the machine,

Attached to the. left hand end of the spinner" "shaft 386, Figs. 1, 7 and 8, is asprocket conhected by a chain 802 to -a sprocket 803 keyed.

to a shaft 81M journaled in a bracket 80!. The

chain is kept tight by an idler sprocket flllfi supported on alever 801 which is adjusted by a rod 808; Keyed to 'the shait 804' is a sprocket {Glover which passes a chain 8! which'also passes over a sprocket II I, and the chain is kept tight bran idler M2 supported on a bell crank lever'8l3 made adjustable by a rod 8. Connected to the sprocket'lll is a straight jaw fe male'clutch member 815, Fig. 8, rotatably supported on a shaft iii Journaled in a bracket 8| 1. Mounted on the shaft lit and slidabiy-splined to lifts the latch 882 free from is'the male clutch member 8i8, see also Figs. andi li, backed up by a collar M8 on the shaft 2- and'.'a=sprlng. 828. The clutch controllingv means will'be described later.

to'a shaft 8 v to a counterbalance weight carrying disc ,822 bymeans of i8 is a disc m which is bolts. The disc :822 supports a counterbalance weight 823 which is adjustable radially on a rod824, Figs. 9,

of nuts 828. The disc 822 is keyed to a shaft 821 which is also supported in the bracket 8". At-

833 supported in a bracket bearing 88l on the bracket 8. Fastened to the disc 838 is a sprockct 834 which is driven from a sprocket 835 through a chain 838. The sprocket 835 is mounted on l0 'and'll, by means);

the bracket 8" in onsetam 829 to reset the counterbalance weight. The disc 838 is keyed to a shaft a shaft 831 supported by brackets 838and B38.

Also mounted on the shaft 831 ating cam 848 and which will is a clutch operwhich is provided with lobe 8 be more fully described later. Also keyed to the shaft 831 is a sprocket 842 which is driven from a sprocket 843 through a chain 844. The sprocket 843 is driven from the main shaft 224 by reduction box 845 through shaft 848 on which it is mounted. The reduction box 848 also drives the transfer mechahismwhich slides the iorm board into the spinner frame.

.Since the ,transfer mechanism and the spinner reduction boxes are driven from a 224, they are also otherv and therefore the spinner, transfer mechanism and thecounterbalancing mechanism can be maintained at all times. -By means of the mechanism described, the clutch controlling cam and the counterweight common shaft I the spinner.

a form board is was left at the-bottom huehtly referred to.

it causes the yoke to disen age the clutch member M8 and to move it past the latch so'as not to interfere with the raising oi the latch when pushed into'the' lower guide.

when the latch is raised the spring 828 will move the clutch member 8i! toward the clutch member 8|8 when the roller 884 rolls or! the lobe 84! of the cam and when the counterbalancing weight has been reset by the mechanism described, the clutch member 8I8 will interensage with the clutch member H8 and connect the counter-balancing weight to the spinner, as previ ously described. At the beginning or every continuous loaded operation be in the lower guide of spinning cycle'in a a form board will the spinner and therefore it will be necessary for the counterbalance weight 823which at the end of the previous cycle of the circle, Fig. 10, to be moved-to the top of the circle, Fig. 11. By means of mechanism described and to be again subsethe counterbalance weight is reset to this position by the beginning of every spinning cycle and is picked up and makes two and one-half revolutions during each spinning cycle. I

At the end of the spinning cycle it is necessary to disconnect the counterbalance weight from the spinner and this is accomplished by the cam 848, Fig. 14. The cam 848 makes one rotation for each spinning cycle and therefore when the lobe 8 comes into contact with the roller 884 just before the end of the spinning cycle, it. disengages the clutch jaw 8l8 from the jaw 8l5 and so disconnects the counterbalance weight from 'During the operation of the transfer mechanism the counterbalance weight 823 must be returned to the top ofvthe circle since at the end 0 of the spinning cycle the weight stops at the in timed relation with one ann the interrelationship between resetting arm are continuously rotated and are rotated once during" each cycle of the machine.

counterbalance clutch control Whena form board is pushed in the spinner by the pusher bar the leading end of the form board comes into contact/with an arm .841, Figs. 7 and 8 pinned to a shaft 848 supported by brackets 848 and 849a. Pinned to the shaft 848 is a lever 858 to the end of which is;

of a link 8, the other end of which is connected to a latch 852,'Fig. 9. Thus when the form board comes into contact with the arm 841 it the yoke permits the clutch member 8l8 to move towardthe clutch member 818 when released by the.

cam 848,113.14.

The cam 848 is so tinted with relation to vthe stroke of thetransfer arm which moves the form board, that the lobe I of the cam remains in contact with a roller 884 supported on a lever 888 by a stud 888 for about one-third of the stroke of the form board; The lever 858 is pinned to a shaft 881 pinned to the shaft 881 is a clutch yoke 883 and when the roller 884 isengaged by the lobe an cfthecamfll attheendoiaspinner operation 853 which 388 of the transfer mechanism bottom of the circle, Figs. 1, .1 and 8. and is in counterbalancing relation to the form board which is at the top of the spinner and about to be dischar ed. 7 r

The position of the counterbalance weight 823 at the end of the spinning operation is shown in Fig. 10, and it is returned to the position shown in Fig. 11 by the roll 88l, before described, which engages the arm 828 and moves the arm into the position shown in Fig..11, raising the counterbalance weight 823 to the position shown in this figure. The weight 823 is now in counterbalancing relation with respect to a form board that may be pushed into the lower guide on the spinner. The shafts 833 and 821 are .oflset vertically andhorizontally -so that the attached by means or a stud, one end in a bracket 858. Also roller 83!, as it moves from'the position shown in Fig. 11 tothat shown in Fig. 10 during a spinnin operation, will not obstruct the rotation of the arm 828 ,and the counter-weight during the operation of the spinner.

In order that the counterweight 823 may be I held in the position shownin Fig. 11, the end of the rod 824 is notched at 888 into which a. roller 884 on an arm 888 is pushed as the counterweight moves into the position shown in Fig. 11. The roller 884 is supported on the arm 885 by a. pin 888. The arm 888 is pivoted on a shaft 881, Fig. 7,. which is journaled in a bracket 888 fastened to the transfer frame 881a. Pinned to the shaft 881 is a yoke sea which forms a rigid backing for a spring 818 which surrounds a rod an and the spring is put under compression by means of a washer held in position by a cotter pin passing through the rod 81l. Lock nuts 812 be spun which might cause ning mechanism.

regulate position of the roller it with respect weight. Thus it can be seen that the counterweight is always returned to the top half of the circle after. each spinning cycle and held there in readiness-for the ensuing spinning cycle.

As the counterbalance clutch is released by a form board as it is pushed into a guide on the spinner, it is obvious that if the spinner is operated without form boardthat the counterbalancing mechanism will not be connected to the spinner shaft. Hence no unbalanced weight will damage to the spin- What is claimed is:

, 1. In amachine for removing by centrifugal action excess material in a fluid state accumu-' lated on the end of dipped forms, the combination a of an elongatedspinner, a shaft extending longitudinally through the center; of said spinner for rotation of the spinner about it axis, form board cry of said spinner, form boards slidable into and out of said guides, dipping forms mounted on-said boards and extending laterally with respect to the spinner with the free ends outermost, means for rotation of said spinner at a speed to produce a centrifugal force on said excess material of sufllcient value to remove said excess material, said means automatically spinning said spinner and stopping the same after said excess material has been removed,- and means for ejecting said formboards from said guides. 2. In mechanism. for removing by centrifugal action excess material massed on the end of an inverted dipped form, the combination of an elongated spinner, a shaft extendinglongitudinally through the center of said spinner for rotation of the same about a horizontal axis, form 1 board guides extendinglongitiidinally along the periphery of said spinner, form boards, dipping forms mounted on said boards in inverted position on the lower side of said spinner and extending in a radial direction with the free ends lowermost, automatic means for rotaing said spinner and accelerating its speed to create suf.--

material and fordecelerating the speed fof rotation of the spinner and stopping it with the forms on the upper side of said spinner, and means for ejecting said form boards from said guides.

3. In a machine for removing by centrifugalaction excess material in a fluid state accumulated on the ends of dipped forms, the combination of an elongated spinner, ash

affextendingi longitudinally through the center of said spinner for rotation of the same about a horizontal 3 axis,=two diametrically oppositely located form board guides extending longitudinally along the periphery of laid spinner with one on the lower- Y side of the spinner in a loading position and the otherlm the upper side of thespinner ina dis-- position when the machine is at rest, form-boards slidably positioned in said guides. a plurality of forms secured to said form guides extending'longitudinally alon the periphing said spinner and for stopping the same after said excess material has been removed with the I loaded guide in the discharging position and the unloaded guide in the loading position.

4. In a machine for removing by centrifugal action excess material in a fluid state accumu-y lated on the ends of dipped forms, the combina-- tionof an elongated spinner, a shaft extending I longitudinally through the center of said spinner for rotation of the same about a horizontal axis,

two diametrically oppositely located form board guides extending longitudinally along the periphery of said spinner with one on'the lower side of the spinner in a loading position and the other on the upper side of the spinner in a,discharging position when the machine is at rest, form boards slidably positioned in said guides, 'a plurality of forms rigidly secured to said form boards and extending radially of said spinner, a transfer mechanism for pushing a form board into the lower guide and a form board out of the upper.

uide, automatic means for rotating the spinner after the transfer operation has been effected to produce a centrifugal force on said excess material' of sufficient value to remove said excess material, automatic means for starting said spinner and for stopping the same after said excess material has been removed with the loaded guide in the discharging positipn and the unloaded guide in the loading position, and sensing means operable across the paths traversed by the form boards in regions adjacent the ends of the guides and after the transfer operation has been effected for controlling the disabling of said spinner rotating means.

5. In a ma c'hine for removing by centrifugal 'action excess material in a fluid state accumulated on the ends of dipped forms, the combination of an elongated spinner, a shaft extending longitudinally through the center of said spin-z ner for rotation of the sameiabout a horizontal] axis, two diametrically oppositely located form board guides extending longitudinally along the .-periphery of said spinner with one on the lower side of the spinner in a loading position and the other on the upper side of the spinner in a discharging position when the machine is at rest, form boards slidably' positioned in said guides, a ficient centrifugalforce to remove said excess V plurality of forms rigidly secured to said form boards and extending radially of said spinner, a transfer mechanism for pushing a form board into the lower guide and a form board out of theupper guide, automatic means for rotating the spinner after thetransfer operation has been effected to produce av centrifugual force on said excess material ofsuflicientvalue to remove-said excess material, automatic means for stopping said spinner after said excess material has been I. in means operable across the paths traversed by saidformboardsinregionsadjacentthe'endsof lglnamachine-for removedwiththeloadedguideinthedisc' position and the unloaded guide in the loading position, said rotating means comprising a nor-" malb disengaged clutch and means for e s sinc said clutch and 'controlxmeans oomprising senssaid guide: and

operable when obstructed by a form board to control disabling of said engaging tion of an elongated spinner, a shaft extending longitudinally through the center of said spinner for rotation of the same about a horizontal axis, two diametrically oppositely lopated'form board guides extending longitudinallyalong the periphery of said spinner with one on the lower side of the spinner in a loading position and the other on the upper 'side of the spinner in a discharging position when the machine is at rest, form boards slidably positioned in said guides, a plurality offorms rigidly secured to said form boards and extending radially of said spinner, a transfer mechanism for pushing a form board into the lower guide and a form board out of the upper guide, automatic means for rotating the spinner after the transfer operation has been effected to produce a centrifugal force on said excess material of sufficient value to remove said excess material, automatic means for stopping said spinner after said excess material has beenremoved with the loaded guide in the discharging position and the unloaded guide in the loading-position, said rotating means comprisinga normally disengaged clutch, means operable to engage and disengage said clutch, a second clutch operating means operable to move said clutch into disengaging positions, means for holding said clutch when operated by said second clutch operating means in disengaged position, and sensing means operable across the paths of said form boards after the transfer operation has been effected and disabling when unobstructed said second clutch operating means. v

8. In a machine for removing by centrifugal action excessmaterial in a fluid state accumulated on the ends of dipped forms, the combination of an elongated spinner, a, shaft extending longitudinally through the center of said spinner for rotation of the same about a horizontal axis, two. diametrically oppositely located form board guides extending longitudinally along the periphery of said spinner with one on the lower side of the spinner in a loading position and the other onthe upper side of the spinner in a discharging position when ,the machine is at rest, form boards slidably positioned in said guides, a

plurality of forms rigidly secured to said form f ing connection between said spinner and counter- 7. Ina machine for removing by centrifugal action excess material in a fluid state accumulated on the ends of dipped forms, the combination of an elongated spinner, a shaft extendinglongitudinally through the center of said spinner for rotation of the same about a horizontal axis, two diametrically oppositely located form board guides extending longitudinally along the periphery of said spinner with one on the lower side of the spinner in a loading position and the other on the upper side of the spinner in a discharging position when the machine is at rest, form boards slidably positioned in said guides, a plurality of forms rigidly secured to said form boards and extending radially of said spinner, a transfer mechanism for pushing a form board into the lower guide and a form board out "of the upper guide, automatic means for rotating the spinner boards and extending radially of said spinner, a transfer mechanism for pushing a form board into the lower'guide and a form board out of the upper guide, automatic means for rotating the spinner after the transfer operation has been enacted to produce a centrifugal force on said excess material of sufiicient value to remove said excess material, automatic means for stopping said spinner after said excess material has been removed with the loaded guide in the discharging position and the unloaded guide in the loading position, a counterbalancing mechanism 7 comprising a rotatable counterbalance weight, a drivbalancing mechanism comprising a clutch, means for automatically connecting said weight'alternately in counterbalancing'relation to the form boards alternately loaded into said guide, and means operable by a form board as it is pushed into a guide to cause said clutch to be engaged.

9. In a machine for removing by centrifugal action excess material in a fluid state accumulated on the ends of dipped forms, the combination of an elongated spinner, a shaft extending longitudinally through the center of said spinner for rotation of the same about a horizontal axis, diametrically oppositely located form board guides extending longitudinally along the periphery of said spinner with one in a loading position and the other in a discharging position when after the transfer operation has been effected to produce a centrifugal force on said excess material of sufllcient value to remove said excess material, automatic means for stopping said spinner after said excess material has been removed with the loaded guide in the discharging position and the unloaded guide in the loading position, and a counterbalance weight and means for connecting said weight in counterbalancing relation to form boards loaded alternately into said guides.

" the machine is at rest, form boards slidably positioned in'said guides, a plurality of forms rigidly secured to said form boards and extending radially of said spinner, transfer means for pushing a form board into the guide in the loading position and a form board out of the guide in the discharging position, automatic means for rotating the spinner after the operation of said transfer means has been efiected to produce a centrifugal force on said excess material of sufilcient value to remove said excess material, and automatic means for stopping said spinner after said excess material has been removed'with the loaded guide in the discharging position and the unloaded guide in the loading position.

GUSTAV A. FINGADO.

. HANS LUDWIG. 

